Automatic signaling apparatus



AprilZ, 1929. I J. GULLONG 1,707,909

AUTOMATI C S IGNALING APPARATUS Filed Aug. 27, 1925 8 Sheets-Sheet l Tgl INVENTOR 8 1 4: Gallo,

BY M

l6 ATTORNEYS WITNFBSES I/ M I April 2, 1929. J. GULLONG AUTOMATIC SIGNALING APPARATUS Filed Aug. 2'7, 1925 8 Sheets-Sheet 2 INVENTOR ZZ k ATTORNEYS @605 Gal QN MEN 6M QwN WITNESSES ##M w L i April 2, 1929. J. GULLONG AUTVOMATI'C SIGNALING APPARATUS 8 Sheets-Sheet 3 Filed Aug. 27, 1925 W m A INVENTOR GalZaI BY 9 ATTORNEYS April 1929- J. GULLONG 1,707,909

AUTOMATIC SIGNALING APPARATUS Filed Aug. 27, 1925 8 Sheets-Sheet 5 @005 Gallon 7 BY W ATTORNEYS April 2, 1929. J. GULLONG 1,707,909

AUTOMATIC SIGNALING APPARATUS Filed Aug. 27, 1 925 a Sheets-Sheet 100 01 l 1 T1 -23. w w E IO e 119 V .11

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WITNESSES INVENTOR ATTORNEYS April 1929. J. GULLONG 1,707,909

AUTOMATIC SIGNALING APPARATUS Filed Aug. 27, 1925 8 Sheets-Sheet WITNESSES J 5 2V5??? woo a yzr fkfl BY ./Z W ATTORNEYS April 1929. J. GULLONG l,707;909

AUTOMATIC S IGNALING APPARATUS Filed Aug. 27, 1925 8 Sheets-Sheet 8 Z M nmmumu w if 1 Q2 J1 WITNESSES Jo" a? v .Jwob Gallon rwflww BY %Wm ATTORNEYS 1N VENTOR Patented Apr. 2, 1929.

. UNITED STATES JACOB GULLONG, OF SOUTH HADLEY FALLS, MASSACHUSETTS.

AUTOMATIC SIGNALING APPARATUS.

Application filed August 2'7, 1925.

This invention relates to signaling apparatus and comprehends a call signaling sys tem including a central. actuating apparatus by means of which distinguishable signals may be simultaneously given off from a number of widely separated signaling or annunciating devices controlled by the central apparatus.

In the larger stores, oflices, shipyards,

mines, or other commercial plants, which embody a number of widely scattered depart ments, itis essential in the performance of their duties, for the heads or executives of the departments to visit various points in their own or other-departments and as. it is not always feasible for them to leave a memrandum as to their whereabouts, there has arisen a long-felt need for an expeditious medium of calling these heads when their presence is urgently required at a central oi'lice.

It is, therefore, an object of the present invention to provide an improved calling and signaling system and apparatus including a central sending station having a signal actuating mechanism and annunciator or signal devices arranged at various points throughout the plant and its several departments controlled by the signal actuating mechanism at the central sending station for giving off audible, visual, or other signals, which are sure to be received by the head of a department irrespective of his location.

More particularly, the invention contemplates an electric signal-sending apparatus in the nature of a device provided with a keyboard controlling the disposition of circult-closing elements in the path of movement of movable camming means so as to energize the various signaling or annunciating devices simultaneously.

The invention furthermore aims as an object to provide mechanism whereby the actuation of one key releases and renders a pre-' viously depressed key inactive so as to preclude the possibility of confusion in the signals omitted.

The invention further embodies means for selectively and automatically repeating the signals a predetermined number of times or continuously at the option of the operator together with manual means for respectively stopping the signaling mechanism at the end of a predetermined signal during the signaling operation, and means for opening the circuit in event of error whereby to ren- Serial No. 52,910.

der the signaling device or annunciators inaudible or invisible while pern'iitting the mechanism to continue to function until the stopping point of thesignals is reached, so as to prevent disruption of the mechanism and confusion in the signals when the device is subsequently operated.

lVith the above recited and other objects 111 view, which will be more readily apparent as the nature of the construction is better understood, reference is had to the accompanying drawings, in which Figure lis a plan view of the signal-sendmg apparatus with the cover or housing removed Fig. 2 is a side view with the cover or hous ing swung to an open position;

Fig. 3 is a longitudinal sectional View taken approximately on the line indicated at 8-3 in Fig. 1, with the cover in its closed relation;

Fig. i is a fragmentary longitudinal sectioal view similar to Fig. 3 with the cover removed and illustrating the actuation of one of the keys to close the motor circuit and to dispose the signaling-circuit-closing switch-actuating element in the path of movement of the camming means;

Fig. 5 is a similar view illustrating the (ramming means coacting with said elelncnt andclosing the signaling circulit switch;

Fig. 6 is a transverse sectional view taken approximately on the line 66 of Fig. 8;

Fig. 7 is a similar view taken approximately on the line 77 of Fig. 3; v

Fig. 8 is a sectional view taken approximately on the line 88 of F ig. 1, illustrating the repeat mechanism set for continuous operation;

Fig. 9 is a fragmentary enlarged similar view illustrating the repeat mechanism set for the repeat ofasignal;

Fig. 10 is a similar view illustrating the operation thereof;

4 ig. 11 is a transverse sectional view taken approximately on the line llll of Fig. 8;

Fig. 12 is a detail fragmentary side elcvation with parts in section as viewed from the right ofthe machine and particularly illustrating the signaling circuit breaking device employed in event of an error;

Fig. 13 is a fragmentary longitudinal sectional view taken approximately on the line 1313 of Fig. 1, illustrating the instantaneous stopping means in normal position;

Fig. 14 is a similar view illustrating the stopping device actuated;

Fig. 15 is a tragmentary plan view of the instantaneous stop iing device;

F 16 is a liragmentz'n'y longitudinal sectional view taken ap iroximately on the line 1(5l.(l of Fig. 1, illustrating in full and dotted lines the normal and shifted positions (it the stop key and associated parts;

Fig. 17 is a similar view thereof, with the parts shifted and engaged by the stop a m;

Fig. 18 is a similar fragmentary reversed View oil the stop-key-aetuated stopping mechanism;

Fig. 19 is a view of the wiring diagram;

Fig. 20 is an enlarged l'ragn'iontary detail sectional view of the circuit closer for the sig naling circuit.

tejterring to the drawings by characters 01 reference, the signal-semling apparatus comprises a base from which is supported for rotation, a drum l1 SGClll'Ctl to a shaft 12 journaled in side bearing brackets or standards 13 and 1-4:, The drum shaft 12 has keyed or secured thereto a worn'i wheel 15 with, which a worm 16 meshes, said worm bein secured to a worm shaft 17 extending through a bearing 18. The worm shaft 17 has secured or keyed thereto at its rear end, a worm wheel 19 with which a worm 20 meshes, the said worm 20 being secured or keyed to the motor shaft 21 of a 1110;01 22 mounted on the base 10. From the foregoing it will be seen that when the motor is energized, the drum 11 will be driven and rotated in the direction indicated by the arrows in the various figures.

The motor is included in a motor circuit (see Fig. 19) in whicn 23 is a circuit \"ire leading from a source of supply to a stationary contact let. of a switch 25, which. switch includes a mov; ble contzct 26 connected by a circuit wire 27 to one of the brushes 28 on the motor. he motor circuit also includes a circuit wire 29 leading from the opposite pole of the source of supply to the brush 30 of the motor so that when the switch is closed and the circuit completed, the motor will operate to rotate the drum 11. The stationary contact clement Bel Fig. 25) is mounted on a bracket 31 supported from the base and the movable contact element 526 is mounted on an arm 32 which is pivoted or fillcrumcd at 3.2-; on the bracket 1:31. A. spring or other suitable means Zl-t is interposed between the bracket 31 and arm 32 tor normally c"- liecting a relative separation of the mo "able contact element with respect to the stationary contact element so that the motor circuit is normally opened.

The means for swinging the arm to bring the mov: ble contact element 26 into contacting engagement with the stationary contact element 2st to close the switch and the motor circuit against the action of the spring 34-, consists of a pressure roller 35 carried on a frame 36 which is pivoted on a transv shaft 37 mounted in laterally spaced bearing brackets 38 for vertical rocking -1novement whereby the pressure roller upon upward move-men t engages the cam face 39 ol the arm 32. The tran'ie 36 is normally swung downwardly at its rear end, by means of a. spring or equivalent device, 40, which is attached to the frame and one of the brackets 38. Stops 41 carried by the brackets 38 en the under side of the frame 536 to limit the downward movement thereof under the action of the spring l-O.

he signaling circuit (see Fig. 19) includes a source of sin iply, such as a battery 4-2, from one pole of which acircuit wire -13 leads to a plum ity o1? annnnciiating or signaling devices set, through branch wires 15. The signaling], devices 44 may be zudible, such as bells, or visual, such as lights, without in any way departing "from the general it ea of the invention, and from said annrmciating or signaling devices it, branch circuit wires ll cad to a circuit wire 17, which is connected with the statimiary contact element 18 0t a switch 19. The switch 41-9 includes a n'iovable contact element connected by a circuit wire 51 with the stationary contact element 52 of a switch 53 having a movable contact element 54- which is in turn connected by a return circuit wire 55 with the opposite pole of the battery or source of power 4-2. The stationary contact element 4-8 of the switch 49 is carried by a bracketand the movable contact 50 is car ried by an arm 57 pivoted at 58 to the bracket 56. A coil contractile spring or other equivalent means 59 is interposed between the arm 57 and the .l'iracket for no anally maintaining the contact elements 48 and 50 out of conact. In order to provide n'iea-us for swingiin the arm 07 against the action of the spring 55) to a position to en; 'e the cont-acts 48 and 50, a pressure roller o) is carried by a vert cal. roctable frame (51 which is tnlcrumed on a tiitllHVtl-SC shaft (55% mounted in the bearing b .itt lots 38. A spring or other equivalent de vice 3 is connected to the forward end of tl e f ame and to the base at its opposite ends ilor normally exerting a tension in av direction to roc the rear end carrying the pressure roller (it) upwardly. The arm 57 is provided with a cam face (S-lwith which the pressure roller (30 con "531-; upon downward increment to swing the arm tlgl'tllNE-It the action of the spri 1g 50 rcarwardly to engage he contacts 48 and 50 for closing the switch l9 and the i 'naling circuit to energize or mituate the s alinri or annunciator devices 4%.

The mcchanisn'i for closing the motor and signal circuits to send forth the signals, includes a plurality of laterally spr-iced acks or rock levers l tulcrumed upon a transverse shaft 66 mo rated in bearing plates (37 and 68. Each jack or reel: lever is of substantially C-shape luwing a rearwardly projecting lower terminal 69 the said terminals nirectly overlying the front frame rail T0 of the frame 36. The jacks are also provided. with forwardly extending tails 71, the lower extremities 72 of which are connected by springs or equivalent means 73 to the base, whereby to normally swing the lower terminals 69 upwardly and bodies of the acks forwardly. The tails 71 each have pivotally connected thereto, as at 7%, one extremity T5 of a key lever 7 6, which k levers are in turn fulcrun'ied upon a transverse shaft 77 mounted at its opposite ends in the bearing plates 6? and 68, the key levers being provided with linger-engaging keys 78 at their forward upturned ends 79, which key levers are provided with suitable indicia 80.

From the foregoing it will be seen that when any one of the keys 7 8 is depressed, the rear extremity is raised to swing the tail 71 of its jack upwardly against the action of the spring Y3, thereby depressing the lowe' terminal 69 of the jack. This effects downward rocking movement of the forward end of the frame 86, thereby effecting upward movement of the pressure roller to cause the same through its engagement with the cam face 39 of the arm 32, to close the motor circuit resulting in rotary motion of the drum 11.

The upper rearwardly projecting terminal 81 of each jack has pivoted thereto at 82, a lever 83 having an upwardly and rearwardly noject-ing cam head 84: and a depending finger 85. The lever is further provided with alaterally bent stop lug 86. The drum 11 is provided with laterally spaced circu1nferentially disposed sets of .cam lugs 87 adapted to selectively co-operate with the cam heads 84 when the jacks are swung rearwardly, by depressing the keys 78, whereby to swing the depending linger of the lever 83 rearwardly to engage the transverse cross bar 88 of the frame 61 to rock its front end upwardly against the action of the spring 63. This movement rocks the rear end downwardly, thus moving the pressure roller 60 in a direction to engage the cum face 6st of the lever to rock the lever 57 rearwardly for closing the signaling circuit.

In order to hold thel-Iey lever T6 which has been depressed in a depressed condition until released and thereby retain the a ck connected therewith in a rearward shiftml position, a latch plate 89 is fulcrumed upon a transverse shaft 90. said latch plate having a down turned latching nose 91 at its free rear end engageable with a keeper shoulder 92 formed on each jack. The upper rearwardly projecting terminal 81 of each jack 65 is formed with a cam face 93, which merges into the keeper shoulder 92 so that rearward swinging of the ack effects the camming of the latch plate 89 upwardly against the action of a spring 94 which normally tends to swing said latch plate downwardly. The jacks 65 are limited against rearward swinging movementby the cross rod 95 and against forward swinging movement under the action of the springs 73 by the cross rod 96. The latch plate 89 is limited against upward swinging movement by stop pins 97. The stop pins 97, the rods 95 and 96 and the shaft 90 are all mounted in the bearing plates 67 and it is of course obvious that when a key is depressed and the motor circuit is closed, the drum 11 will continue to rotate and th jack 65 will he maintained in its rearwardly shifted position to dispose the cam head 8% in the path of movement of the cam lugs 87. In order, however, to provide means for automatically breaking the motor circuit and re leasing the rearwardly shifted jack to stop the motor after one or more complete rotations of the drum, a stopping mechanism is provided, which includes a lever 98 (see Figs. 8 to 11) fulcrumed at 99 to the inner side of the bearing plate 67, said lever having an adjustable engaging element 100 underlying the latch plate 89. The lever 98 is provided with a laterally outwardly projecting terminal 101 (see Fig. 2) which is disposed in the path of movement of a rotatory lifter 102 secured to a shaft 103 which extends through and has bearing in the bearing plate 6?. A pinion 101 is secured to the sha "t 103 and said pinion meshes with a vertically movable rack bar 105, which rack bar is connected a its lower end by a pin 106 to the forked terminal 107 of a lever 108 pivoted at 109 in the side bearing bracket 13. A spring 110 connected respectively at its opposite ends to the lever 108 and the side hearing bracket 13, tends normally to eifect an upward movement of the forked end 107 of the lever and a corresponding upward movement of the rack bar 105. The rack bar is provided on its outer side face with a pair of vertically disposed ratchet teeth 111 with which a gravity pawl 112 cooperates to hold the rack bar downwardly against the action and tendency of the spring to raise the same. A mutilated gear 113 having teeth 114, 115 and 116 is secured or keyed on the shaft 103 and a radially disposed arm 11. projects radially from and is secured to the end of the drum 11 for successively engaging the teeth 11%, 11.5 and 116. The lower end of the rack bar is provided with an enlarged head 118 over which the upwardly offset forked rear terminal 119 (see Fig. 8) of a lever 120 engages. The lever 120 is pivoted as at 121 to the bearing plate 67 and is provided with a slot 122 which receives a pin 123 projecting from a manipulating lever 124 pivoted at its rear end at 125 to the hearing plate 6'7. The upwardly offset forward ly projecting manipulating terminal 126 of said lever has pivoted thereto a gravity keeper pawl 12?, the nose 128 of which co-operates with the ratchet teeth 129 on the forward edge of the bearing plate 67. This manipulating lever 124 through its pinand-slot con or W) nection with the lever 120, a'l'lfords a medium for moving the rack bar 105 to a position for setting the mutilated gear 113 from the keyboard of the device. An auxiliary spring 120 connected with the lever 120 adjacent its .ipwardly ollsct forked rear end 119 to asslst the spring 110 in its action. If the manipulating lever be d (pressed to the fullest extent to one go the nose 128 of the gravity pawl 127 with the lowermost ratchet tooth 12 the rack bar will be moved downwardly and the mutilated gear turned thereby until the long est tooth 110 is disposed in a position to be engaged by the radial arm 117 after one complete revolution of the drum. This engagement of the arm 117 with the ratchet tooth 110 effects a further depr 'on or movement of the rack bar 105 downwardly so that the smooth surface of the rack bar above the ratchet teeth 111 engages with the gravity pawl 112 and releases the same from the rack bar which allows the spring 110'to suddenly e'llect upward movement of the rack bar before the gravity pawl re engages with the ratchet teeth. This upward movement of the rack bar rotating the shaft 103 in a counterclocliwise direction in Figs. 8, 9 and 10, causes the rotatory lifter 102 which is secured to the shaft 103 to engage with the lateral outwardly projecting terminal 101 of the lever 98, to move the same whereby the adjustable engaging element 100 underlying the latch plate 89 lifts said latch plate and re leases the depressed key and ack. Upon its release the said jack and hey are moved to their .i'ioruial position so that the motor circuit is broken and sipaialing by the device is brought to a stop. If setto engage the nose 120 with the ncxt-tothe-lowest ratchet tooth 120, the tooth 115 will be disposed in a position. to is engaged by the radial arm 117 so that the first revolution will. e'llect the engagemcnt of the arm 117 with the tooth 115, to turn the mutilated gca r 1153 and shaft 103 a portion of a revolution to bring the longer tooth 110 into a position whereby the second revolution of the drum will c'lfect the engagement of the arm 117 with the tooth 116, which will bring the rotatory lifter into engagement with the lateral. outwardly projecting terminal 101 of the lever 98 to hit the same into engagement with the latch plate 89 to rclrase the latch plate and cause a cutting oil of the motor.. If the nose 128 is engaged with the next adjacent ratchet tooth 129, it obvious that the stop mecniinism will function after three revolutions the drum. If the nose 128 is engaged in the uppern'iost ratchet tooth 129, the rack bar will be raised a sullicicnt distance to dispose the teeth of the mutilated gear 113 out of the path of nlovci'ncnt of the arm 1.17, so that the automatic SllOppl 11g mechanism i s rendered neutral and hence the device will continue to opcrate to repeat the signals until. stopped by 1nanually stopping means in the nature of a stop key 180. To set the revolution controlling means for one revolution only of tee drum 11, the manipulating terminal 126 of the manipulating lever 12% is depressed until the nose 128 of the gravity pawl 127 engages the lowest ratchet tooth 129. The depression of the love 1261 depresses the lever 120 through its pin-and-slot connection 123 and 122, and (1011f. quently swings downwardly the upwardly offset forked rear terminal. 119, thereby moving the rack bar 105 downwardly. The downward movement of the rack bar 105 engaging with the teeth of the pinion 101 which is secured to the shaft 103, turns the shaft 103 in a clockwise direction as viewed in Figs. 8, 9 and 10. This turning movement of the shaft 103 turns therewith in the same direction, the mutilated gear 113 until the longer tooth 110 is disposed in a position to be engaged by the radially disposed arm 117 which projects from and is secured to the end of the drum 11. As the rack bar 105 is moved downwardly, the gravity pawl 112 is ratchcted over the pair of teeth 111 in the side of the rack bar so that its nose or bearing point engages with the uppermost tooth 111. This turning movement of the shaft 103 also turns therewith in a clockwise direction as illustrated in Figs. 8, 9 and 10, the rotary lifter element 102, to approximately the position illustrated in F i g. 10 so that the shoulder 102 is disposed directly below the outwardly projecting terminal 101 of the lever 98. It thus follows that when the drum reaches approximatelyone complete revolution in a counterclockwise direction, the arm 117 will engage with the tooth 110 to partially turn the shaft 102 further in a clockwise direction, thus causing the shoulder 102 of the rotary lifter 102 to engage under and raise the outwardly-projccting terminal 101 of the lever 0h. This lifts the lever 98 and causes the adj ustablc engaging element 100 underlying the latch plate to engage and lift the latch plate. It is obvious that the shaft 103 and its pinion 10 1 are free to be turned by the arm 117 in this further clockwise direction because the rack bar is capable of a further downward movement against the action of the spring 110 and it follows also that after arm 117 has passed over the tooth 110, the rack bar moving downwardly therewith will cam the nose of the latch 112 on to the side of the rack bar above the uppermost tooth 111. and the spring 110 acting quicker than the gravity pawl will snap the rack bar upwardly to the same position it occupied before the arm 117 engaged the tooth 110, namely, until the enlarged head 118 engages the forked terminal 119. This upward movement elfects a retrograde or coiniterclockwise partial turning movement of the shaft 108 through the pinion 10d and a similar counterclockwise turning movement of the mutilated gear 113 and the rotary til lifter 102 so that upon the next manipulation of one of the keys 78, the signaling drum 11 will turn one complete revolution and be stopped in the same manner as heretofore described. So long as the lever 124 is retained in the set position described for a single rev- .olution of the revolution controlling means,

each manipulation of the machine will cause the drum to turn one complete revolution and stop.

To set the revolution controlling means for three revolutions, the manipulating lever 124 is depressed from the position shown in Fig. 8 to a point where the nose 128 of the gravity latch 127 engages the next adjacent lower tooth 129. In this position the pin-and-slot connection 123 and 122 will swing the forked upwardly oil'set rear terminal 119 of the lever 120 downwardly a less distance than when the same is set for one revolution. This clownward movement moves the rack bar 105 down to a point where the terminal or nose of the. gravity latch 112 engages the side of the rack bar 105 immediately below the first ratchet tooth 111. This movement downwardly of the rack bar 105 turns the shaft 103 in a clockwise direction to a point where the first or lowermost tooth 114 is in a position to be engaged by the arm 117 as the signaling drum 111 approximately completes the. first revolution. This engagement turns the shaft 103 further in a. clockwise direction and depresses the rack bar until the nose or terminal of the gravity latch 112 engages in the lowermost ratchet tooth 111 on the side of the rack bar 105, thus holding the same down. At the same time, the mutilated gear has been turned further in a clockwise direction to bring the second or intermediate tooth 115 thereof to a position to be engaged by the arm 117 when the second revolution of the signaling drum is approximately completed so that the shaft 103 is again turned a further distance in a clockwise direction and the rack bar depressed until the nose of the gravity latch 112 engages with the ruapermost ratchet toot 111. This turning movement of the sh low disposes the uppermost tooth 116 of the n'iutilated gear into a position to beengaged by the arm 117 when the signaling drum approximately completes its third revolution, at which time through its engagement with the tooth 116, the arm 117 will cause the shaft 103 to be further turned in a clockwise. direction to bring the shoulder 102 of the rotary lifter into engagement with the laterally outwardly projecting terminal 101 of the lever 93 to raise the lever and again lift the latch plate 39. During this engagement of the tooth 116 it is obvious that the rack bar 105 will be depressed so that the nose of the gravity latch 112 is engaged with the side of the rack bar 105 above the uppermost tooth 111, and the spring 110, which functions more rapidly than the gravity pawl 112, will move the rack bar upwardly to its original set position with the ratchet teeth 111 disposed above the nose of the gravity pawl 112 or substantially inthe position illustrated in Fi 11. This resets the manipulating gear as well as the rotary lifter and the revolution controlling means will remain in its set position for stoppage after three revolutions of the signaling drum until manually reset to another position.

The stop key 130, which is more clearly illustrated in Figs. 16 and 17, is attached to a stop-key lever 131 of substantially identical construction to the key levers 76, the same being fulcrumed or pivoted on the. transverse shaft 77 and operatively connected at 132 to the stop-key ack 133 which is of substantially identical construction to the jack 65, being pivoted or fulcrumed upon the transverse shaft 66 and having a forwardly projecting tail 134 to which the key lever 131 is connected and a depending extremity 135 from thetail connected bya spring 136 to thebase 10. The stop-key ack 133, as illustrated in Figs. 16, 17 and 18, is formed with an upper rearwardly projecting terminal 137 to which a lever 138 is pivoted at 139, said lever being provided with a cam head 140 and a depending finger 141. It will, however, be noted that the stop key 130 and the jack 133 are disposed at one side of the cross bar 88 and the front frame rail so that neither the stop-key jack nor the finger 141 functions in connection with said cross be and rail. The cam head 140 is designed to be operated upon by the stop cam lug 142 on the drum 11, when the stop key 130 is depressed to swing the linger 141 rearwardly. The linger 141 is connected at its lower end by a connecting rod 143 with the downwardly projecting arm 144 of the latch plate lifter cam 145 which is fulcrumed upon the cross rod 95 so that the said cam 145 lifts the latch plate 89 and releases the key 7 8 which has been depressed after a signal is completed. The stop-key jack 133 is held in a rearward shiftedaosition by means of a retaining pawl 140, which is pivoted at 147 on the ack 133 and is normally swung to an active engaging position with the latch nose 91 by a spring 148. From this construction it will be seen that if the automatic stopping means is set at neutral so that the device will operate continuously, after the desired number of signals have been rendered, the operator depresses the stop key 130, which upon completion of the signal being rendered will bring the device to a stop and reset the depressed key as well as the stop key 130.

In order to provide means for breaking the signal circuit in event of an error on the part of the operator where the wrong key 80 has been depres ed, the switch 53 (see Fig. 12) is provided which includes the stationary and movable contacts 52 and 54. The movable contact element 54 is connected to a slide rod 149, which is normally moved in a direction to complete the signal circuit by a spring 150. An actuating key 151. is connected therewith by a link 152 for moving the slide rod in a direction to break the circuit in event (ii an error while the motor circuit is permitted to remain in a closed condition. At the same time, however, the operator will depress the stop key so that when the drum has completed a revolution, it will be brought to a stop in the correct position for the starting of a new signal when a subsequent correct key 86 is depressed. ,he operator, however, must maintain the actuating key 151 depressed to hold the signal circuit in open condition until the drum has come to a stop.

In certain instances it may he tound de 7. able to release the latch plate instantaneously and to this end a latch plate releasing lever 153 is pivoted on the bearing plate 68. This lever 15?; is connected to a shaft 154; provided with a head 155 secured thereto at the inner side of the plate 68 and termed with a radial stop arm 156 which engages the stop pin 97. The head is connected by a spring 157 to the bearing plate 68 .t'or normally swinging the lever to an inactive position. The head has connected thereto a radially projecting adjustable member 158 which cooperates with a depressed lug 15$) on the latch plate 89, so that when the lever 1Y0 is swung in a forward direction against the action of the spring 157, the member 158 engages the depressed lug 159 to raise and release the latch plate 89.

In practice, the cam lugs 87 are disposed on the periphery of the drum in correlation to the cam heads of the EIClCS, so that the depression oi. the keys 80 after etlecting the closing of the motor circuit to stop the drum, will give oil a predetermined signal by the rement oi the cam lugs win the cam head.

The construction and arrangement oi the jarlis are such that in event of depression at two he 8t) successively, the lirst l-zey and its 1i aclc will be released upon depresshm of: the second key for the reason that the cam taco 92-3 of the jack oil the second key depres will elevate the latch plate 89 to a poi a which will release the previously latched jack just prior to the hitching of the latch plate behind the shoulder 92 ot the jack of the second key depressed. In (.r-peration, for instance, the operator de nkesses key numbered 3; the depression 01" said hey cm s its connected jack to be swung; or shrl ed so that the lower rearwardly projecting terminal 69 thereof engages the trout frame rail and swings the rear end of the frame 36 upwardly thereby closing the motor circuit. At the same time, the upper rearward ly projecting tern'iinal. 81 disposes the cam head 84 in the path of movement of the cam lugs. As soon as the motor circuit is closed the motor starts and rotates the drum in the direction indicated by the arrows so that the cam lugs engage the cam head 84, thereby rocking the lever 83 and its depending linger rearwardly to swing the rear portion of the frame 61 downwardly while tae cam lug and cam head are in engagement. This ca uses a distance signal from each signaling element or annunciator 1%. Atthis point on the periphery of the drum there will be three cam lugs so that three successive closings of the signal circuit will send tlforth from the annunciators three signals upon each rota tion of the drum. The automatic stop meclranism may be set tor one or more rotations prior to the depression oi? number 3 key or said automatic stop means may he rendered neutral as heretofore explained, in which event when the signal has been repeated the desired number of times, the stop key will be deynressed. V

In order to provide n" s tor covering or housing the drum, mot itches, jacks, and other mechanism, a covering hoe-d 160 is hinged at 161 to the rear wall 162, which wall in turn attached to the base 10, and said covering hood is provided with a cut-out poi tion to accommodate and permit the forward ends of the hey levers to extend therethrough tor manipulation. The forwardly projecting portions of the hey levers preferably eaten d through slots 163 in a stationary front covering plate 164: attached to the base.

In order to gage the setting of the automatic stop mechanism, an indicator or pointer terminal 165 of a lever 166 extends through a slot 167 in a dial plate168, wh ch is provided with indicia 169. The lever 166 is tulcrumed upon the cross rod 95 and is connected by a link 170 with the lever 120.

From the foregoing it will thus be seen that a highly eliicient yet con'lparatively sin'iple and inexpensive signaling apparatus has been devised for the purpose set forth, and while there has been illustrated and described a preferred embodiment of the invention no limitation is necessarily made to the precise structural details as it is to be understood that variations and modifications which properly tt'all within the scope of the appended claims may be resorted to when found expedient.

V'Vhat is claimed is t 1. In an electric signaling system, manually controlled mechanism for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted when rocked to engage and close the circuit closer, a normally inactive rotary drum, an electric motor operatively connected with said drum, a motor circuit including said motor and a normally open switch, a normally inactive rockahle member adapted when rocked to close the motor circuit switch for rotating the drum a plurality of pivoted llltl llt) jacks each having a terminal disposed in juxtaposition to the rockable member for closing the motor circuit when the jack is actuated, each of said acks having a second terminal, a rockable arm on said second terminal, having a cam head, and an actuating tail piece, a plurality ot sets of cam lugs on the drum periphery corresponding to the number of jacks, and manually operable keys connected with the jacks for selectively rocking the same to an active position whereby to initially engage the first-mentioned jack terminal with the rockable member to close the motor circuit and rotate the drum and to dispose the cam head of the rockable arm of the second terminal of the ack in the path of movement of the corresponding set of cam lugs for causing the tail piece of said arm to be rocked and to impart rocking motion to the rockable member for closing the circuit closer of the signaling circuit.

2. In an electric signaling system, manually controlled mechanism for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted when rocked to engage and close the circuit closer, a normally inactive rotary drum, an electric motor operatively connected with said drum, a motor circuit including said motor and a normally open switch, a normally inactive rockable member adapted when rocked to close the motor circuit switch for rotating the drum, a plurality of pivoted jacks each having a terminal disposed in juxtaposition to the rockable member for closing the motor circuit when the jack is actuated, manually operable keys connected with the jacks for selectively rocking the same to an active position, each of said jacks having a second terminal, a rockable arm on said second terminal, having a cam head and an actuating tail piece, a plurality of sets of cam lugs 011 the drum periphery corresponding to the number of jacks, and a latch means engageable with the actuated jack for holding the same in actuated position until. released whereby repetition of the signals is obtained.

3-. In an electric signaling system, manually controlled mechanism, for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted when rocked to engage and close the circuit closer, a no mally inactive rotary drum, an electric motor operatively connected with said drum, a motor circuit including said motor and a normally openswitch, a normally inactive rockable member adapted when rocked to close the motor circuit switch for rotating the drum, a plurality of pivoted jacks each having a terminal disposed in untaposition to the rockable member for closing the motor circuit when the jack is actuated, manually operable keys connected with the jacks for selectively rocking the same to an active position, each of said jacks having a second terminal, a rockable arm on said second terminal, having a cam head and an ac-- tuating tail. piece, a plurality of sets of cam lugs on the drum periphery corresponding to the number of Jacks, latcl'i means engageable with the actuated jack for holding the same in actuated position until released whereby repetition the finals is obtained, and means "for releasing bile latch to stop the motor after a complete rotation of the drum,

l. In an electric signaling system, manually controlled mechanism for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted when rocked to engage and close the circuit closer, a normally inactive rotary drum, an electric motor operatively connected with said drum, a motor circuit including said motor and a normally open switch, a normally inactive rockable member adaptedwhen rocked to close the motor circuit switch for rotating the drum, a plurality of pivoted jacks each having a terminal disposed in juxtaposition to the rockable member for closing the motor circuit when the ack is actuated, manually operable keys CtzllIlOCtGd with the jacks for selectively rocking the same to an active position, each of d jacks having a second terminal, a rockable arm on said second terminal, having a cam head. and an actuating tail piece, a plurality of of cam lugs on the drum periphery corresponding to the number of jacks, latch means engageable with the actuated jack for holding the same in actuated position until released whereby repetition of the signals is obtained, and means for releasing the latch to stop the motor after a complete rotation of the drum, said means comprising a stop cam lug on the drum, a stop key, a jack counectedwith the stop key, and means on said jack when actuated by said key, engageable by the stop lug for releasing the latch.

5. In an electric signaling system, manually controlled mechrnism for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted when rocl-ted to engage and close the circuit closer, a normally inactive rotary drum, an electric motor operatively connected with said drum, a motor circuit including said motor and a normally open switch, a normally inactive rockable member adapted when rocked to close the motor circuit switch for rotating the drum, a plurality of pivoted acks each having a terminal disposed in juxtaposition to the'rockable member for the motor circuit when the jacl; is actuated, manually operable keys connected with the jacks for selectively rocking the same to an active position, each of said jacks having a second terminal, a rockablo arm on said second terminal having a cam head and an actuating tail piece, a plurality of sets of cam lugs on the drum periphery correspondinn to the number of jacls,'latch means ongageable with the actuated jack for holding the same in actuated. position until relczr =d whereby repetition of the signals is obtained, and means for instantly releasing the latch manually and rendering the signaling system inactive.

(3. In an electric signaling system, manually controlled mechanism for closing a normally open circuit closer, said mechanism comprising, a normally inactive roclrable member adapted when rocked to engage and close the circuit closer, a noru'ially inactive rotary drum, an electric motor opcratively C(Ytllltllfll with said drum, a motor circuit including said motor and a normally open mvitch, a i'iormally inactive rockable member adapted when rocked to cl ,se the motor circuit switch for rotating the drum, a plurality of pivoted acks each having a terminal disposed in juxtaposition to the rockable member for closing the motor circuit when the jack actuated, manually operable keys connected with the HCliS for selectively roclc inc; the same to an active p sition, each of said. jaclts having: a second terminal, a rockable arm on said second tern'iinal having; a cam head and an actuating ttlll. piece, a plurality of sets of cam lugs on the drum periphery correspondinc to the number of jacks, latch means engageable with the actuated jack for holding the same in actuated position until released whereby repetition of the signals is obtained, and auton'iatic means for releasing said latch after a predetermined number of revolutions of the rotary member.

7. In an electric signaling system, manually coz'itrolled mechanism for closing a normally open circuit closer, said mechanism comprising a normally inactive rockable member adapted. when rocked to engage and close the circuit. closer, a normally inactive rotary drum, an electric motor operatively coi'iuectcd with said drum, a motor circuit includii'igg; said motor and a normally open switch, a nrmnally inactive rockable member adapted when l'OCliOtl to close the motor switch for rotating; the drum, a plurality of pivoted aclts each having a terminal disposed in. juxtaposition to the roclrable men'iber for closing the motor switch when the jack is actuated, manually operable keys connected with the jacks for selectively rocking the same to an active position, each of said ac n5 having a second terminal, a rockable arm on said second terminal, having a cam head and an actuating tail piece, a plurality of sets of cam lugs on the drum periphery corresponding to the number of jacks, latch means engageable with the actuated jack for bold ing the same in actuated position until released wherel'iy repetition of the signals obtained, and variable automatic means for releasing said latch after a predetermined number of revolutions of the rotary member.

8. in a call signaling apparatus, including a signal circuit having a normally open switch in said circuit, mechanism for closing, said switch COHIPI'lSlIlg a pivoted frame engageable with the switch for closin j the same, pivoted heynctuated jaclts, frame-actuating elements pivoted on the jacks and having 'an1 heads, a rotary drum having axially spaced i'liilerentiatcd sets of circumferential cam lugs, a motor operativcly connected with the drum for turning the same, a motor circuit including said motor and a normally open switch, a second pivoted frame ei'igageable witl said latter switch and operable by the jacks when shi l'ted to close the motor circult, and latch means for holding}; the jacks shifted to cause continuous rotation of the drum and to dispose the cam heads in the path of movement of the circumferential set of hugs corrcs-monding to the arrangement of the shifted jack, wl'iereby the elements pivoted on the jack rocks the frame and closes the signaling circuit a predetern'iined number of times in accordance with the number of cam lugs in the setcorresponding to the shifted jack.

9. In a call signaling system having a signal circuit including a signaling device and a normally open switch, mechanism for closing said switch comprising a pivoted frame cngag'eable with th svitch for closing the same, pivoted hey-actuated jacks, frameactuating elements pivoted on the jacks and having cam heads, a rotary drum having axially spaced differentiated sets of circunr ferential cam lugs, a motor opcratively connccted with the drum for turning the same, a motor circuit including said motor and a normally open switch, a second pivoted frame engagcablc with said latter switch and operable by the jacks when shifted to close the motor circuit, latch means for holding the jacks shifted to cause continuous rotation of the drum and to dispose the cam heads in the path of moven'icnt of the circumferential set of lugs wn'responding to the arrangement of the shifted jaclc, whereby the elements pivoted on the jar-l: rocks the frame and closes the signaling circuit a predetermined number ot' times in accorr ance with the number of cam lugs in the set (IOIIQSPODCllDg to the shift ed jack, and drum-operated latch-releasing device for rendering the device inoperative after a predetermined number of revolutions, and means for adjusting, said device to respectiwly predetcrn'iine the number of revolutious and to render the device inoperative to permit of a continuous rotation of the drum.

10. In call signaling system having a signal circuit including a signaling device and a normally open switch, mechanism for closing said switch comprising a pivoted frame engageable With the switch for closing the same, pivoted. key-actuated jacks, frameactuating elements pivoted on the jacks and having cam heads, a rotary drum having axially spaced differentiated sets of circumferential cam lugs, a motor operatively connected With the drum for turning the same, a motor circuit including said motor and a normally open switch, a second pivoted frame engageable With said latter switch and operable by the jacks When shifted to close the motor circuit, latch means for holding the jacks shifted to cause continuous rotation of the drum and to dispose the cam heads in the path of movement of the circumferential set of lugs corresponding'to the arrangement of the shifted jack, whereby the element pivoted on the acks rocks the frame and closes the signal circuit a predetermined number of times in accordance with the number of cam lugs in the set correspondlng to the shifted ack, drum-operated latch-releasing device for renderlng the device inoperative after a predetermined number of revolutlons, means for ad ustln sald device to res ectlvel redetermine the number of revolutions and to render the device inoperative to permit of continuous rotation of the drum, and a keyactuated manual stopping means for use when the drum-operated means is inactive.

11. An annunciator comprising a rotatable drum, a plurality of actuating devices and arranged in series to produce distinctive signals, a plurality of key bars each having means adapted to co-operat-e With the devices in one of said series to give a signal, a. trigger adapted to hold any one of said keys in operative position and thereby repeat the distinctive signals and means to release the trigger at the end of a signal, said means comprising a key bar, means on said key bar cooperating With the trigger to hold the key bar in operative position, an actuating device positioned on the drum in a position at the end of a distinctive signal and a stop actuated by the key bar and brought thereby into position to be engaged by said actuating device, said stop engaging with said trigger and being moved by said actuating device to re lease the trigger.

JACOB GULLONG. 

